TIVDAK

1 INDICATIONS AND USAGE TIVDAK ® is indicated for the treatment of adult patients with recurrent or metastatic cervical cancer with disease progression on or after chemotherapy. TIVDAK is a tissue factor-directed antibody and microtubule inhibitor conjugate indicated for the treatment of adult patients with recurrent or metastatic cervical cancer with disease progression on or after chemotherapy. ( 1 )

2 DOSAGE AND ADMINISTRATION • For intravenous infusion only. Do not administer TIVDAK as an intravenous push or bolus. Do not mix with, or administer as an infusion with, other medicinal products. ( 2.4 ) • The recommended dose of TIVDAK is 2 mg/kg (up to a maximum of 200 mg) given as an intravenous infusion over 30 minutes every 3 weeks until disease progression or unacceptable toxicity. ( 2.1 ) 2.1 Recommended Dosage The recommended dose of TIVDAK is 2 mg/kg (up to a maximum of 200 mg for patients ≥100 kg) administered as an intravenous infusion over 30 minutes every 3 weeks until disease progression or unacceptable toxicity. 2.2 Premedication and Required Eye Care Adhere to the following recommendations to reduce the risk of ocular adverse reactions [see Warnings and Precautions (5.1) ]. • Ophthalmic exam by eye care provider: Conduct an ophthalmic exam prior to initiation of TIVDAK, prior to every cycle for the first nine cycles, and as clinically indicated. The ophthalmic exam should include visual acuity, slit lamp exam of the anterior segment of the eye, and an assessment of normal eye movement. • Topical corticosteroid eye drops: Instruct patients to administer one drop in each eye prior to each infusion and to continue to administer eye drops in each eye three times daily for 72 hours after each infusion. The initial prescription and all renewals of any corticosteroid medication should be made only after examination with a slit lamp. • Topical ocular vasoconstrictor drops: Administer in each eye immediately prior to each infusion of TIVDAK. • Cold packs: Use cooling eye pads during each infusion of TIVDAK. • Topical lubricating eye drops: Instruct patients to administer for the duration of therapy and for 30 days after the last dose of TIVDAK. • Contact lenses: Advise patients to avoid wearing contact lenses for the entire duration of therapy unless advised by their eye care provider. 2.3 Dosage Modifications for Adverse Reactions The recommended TIVDAK dose reduction schedule is provided in Table 1 . Table 1: Dosage Reduction Schedule TIVDAK Dose Level Starting dose 2 mg/kg (up to a maximum of 200 mg for patients ≥100 kg) First dose reduction 1.3 mg/kg (up to a maximum of 130 mg for patients ≥100 kg) Second dose reduction 0.9 mg/kg Permanently discontinue in patients who cannot tolerate 0.9 mg/kg (up to a maximum of 90 mg for patients ≥100 kg) The recommended dose modifications for adverse reactions are provided in Table 2 . Table 2: Dosage Modifications for Adverse Reactions Adverse Reaction Severity Occurrence TIVDAK Dose Modification Keratitis Refer patients to an eye care provider promptly for an assessment of new or worsening ocular symptoms. [see Warnings and Precautions (5.1) ] Nonconfluent superficial keratitis Any Monitor. Confluent superficial keratitis, a corneal epithelial defect, or a 3 line or more loss in best corrected visual acuity First occurrence Withhold dose until resolution, or improvement to nonconfluent superficial keratitis, then resume treatment at the next lower dose level. Second occurrence Permanently discontinue. Ulcerative keratitis or perforation Any Permanently discontinue. Conjunctival or corneal scarring or symblepharon [see Warnings and Precautions (5.1) ] Any scarring or symblepharon Any Permanently discontinue. Conjunctivitis and other ocular adverse reactions [see Warnings and Precautions (5.1) ] Nonconfluent superficial punctate conjunctival defects, mild vasodilation Any Monitor. Confluent superficial punctate conjunctival defects, moderate to severe vasodilation First occurrence Withhold dose until resolution or improvement to nonconfluent superficial punctate conjunctival defects, mild vasodilation, then resume treatment at the same dose. Second occurrence Withhold dose until resolution or improvement to nonconfluent superficial punctate conjunctival defects, mild vasodilation, then resume treatment at the next lower dose level. If no resolution or improvement to nonconfluen…

5 WARNINGS AND PRECAUTIONS • Peripheral neuropathy: Monitor patients for new or worsening peripheral neuropathy. Withhold, reduce the dose, or permanently discontinue TIVDAK based on severity. ( 2.3 , 5.2 ) • Hemorrhage: Monitor patients for signs and symptoms of hemorrhage. Withhold, reduce the dose, or permanently discontinue TIVDAK based on severity. ( 2.3 , 5.3 ) • Pneumonitis: Severe, life-threatening, or fatal pneumonitis may occur. Withhold TIVDAK for persistent or recurrent Grade 2 pneumonitis and consider dose reduction. Permanently discontinue TIVDAK for Grade 3 or 4 pneumonitis. ( 2.3 , 5.4 ) • Severe Cutaneous Adverse Reactions: Severe cutaneous adverse reactions, including events of fatal or life-threatening Stevens-Johnson syndrome (SJS), can occur in patients treated with TIVDAK. Immediately withhold TIVDAK for suspected severe cutaneous adverse reactions, including SJS. Permanently discontinue TIVDAK for confirmed Grade 3 or 4 severe cutaneous adverse reactions, including SJS. ( 2.3 , 5.5 ) • Embryo-fetal toxicity: TIVDAK can cause fetal harm. Advise of the potential risk to a fetus and to use effective contraception. ( 5.6 , 8.1 , 8.3 ) 5.1 Ocular Adverse Reactions TIVDAK can cause severe ocular adverse reactions, including conjunctivitis, keratopathy (keratitis, punctate keratitis, and ulcerative keratitis), and dry eye (increased lacrimation, eye pain, eye discharge, pruritus, irritation, and foreign body sensation), that may lead to changes in vision and/or corneal ulceration. Ocular adverse reactions occurred in 55% of patients with cervical cancer treated with TIVDAK across clinical trials. The most common ocular adverse reactions were conjunctivitis (32%), dry eye (24%), keratopathy (17%), and blepharitis (5%). Grade 3 ocular adverse reactions occurred in 3.3% of patients, including severe ulcerative keratitis in 1.2% of patients. Nine patients (2.1%) experienced ulcerative keratitis (including one with perforation requiring corneal transplantation), six (1.4%) conjunctival ulcer, four (0.9%) corneal erosion, two (0.5%) conjunctival erosion, and two (0.5%) symblepharon. The median time to onset of the first ocular adverse reaction was 1.2 months (range, 0-17.1). Of the patients who experienced ocular events, 59% had complete resolution and 31% had partial improvement (defined as a decrease in severity by one or more grades from the worst grade) at last follow up. Ocular adverse reactions led to permanent discontinuation of TIVDAK in 6% of patients with cervical cancer. In innovaTV 301, 8 (3.2%) patients experienced delayed ocular adverse reactions occurring more than 30 days after discontinuation of TIVDAK. These adverse reactions included 3 patients with ulcerative keratitis, and one patient (each) with keratitis, punctate keratitis and corneal erosion, blepharitis and conjunctival hyperemia, conjunctival scar, and conjunctivitis and xerophthalmia. Refer patients to an eye care provider to conduct an ophthalmic exam prior to initiation of TIVDAK, prior to every cycle for the first nine cycles, and as clinically indicated. The exam should include visual acuity, slit lamp exam of the anterior segment of the eye, and an assessment of normal eye movement and ocular signs or symptoms which include dry or irritated eyes, eye secretions or blurry vision. Adhere to the required premedication and eye care before, during, and after infusion to reduce the risk of ocular adverse reactions [see Dosage and Administration (2.2) ]. Monitor for ocular toxicity and promptly refer patients to an eye care provider for any new or worsening ocular signs and symptoms. Withhold, reduce, or permanently discontinue TIVDAK based on the severity or persistence of the ocular adverse reaction [see Dosage and Administration (2.3) ]. 5.2 Peripheral Neuropathy Peripheral neuropathy occurred in 39% of patients with cervical cancer treated with TIVDAK across clinical trials; 6% of patients experienced Grade 3 peripheral neuropathy. Perip…

4 CONTRAINDICATIONS None. None. ( 4 )

7 DRUG INTERACTIONS Strong CYP3A4 Inhibitors: Closely monitor for TIVDAK adverse reactions. ( 7.1 ) 7.1 Effects of Other Drugs on TIVDAK Strong CYP3A4 Inhibitors MMAE is a CYP3A4 substrate. Concomitant use of TIVDAK with strong CYP3A4 inhibitors may increase unconjugated MMAE exposure [see Clinical Pharmacology (12.3) ] , which may increase the risk of TIVDAK adverse reactions. Closely monitor patients for adverse reactions of TIVDAK when used concomitantly with strong CYP3A4 inhibitors.

8.1 Pregnancy Risk Summary Based on the mechanism of action and findings in animals, TIVDAK can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology (12.1) ] . There are no available human data on TIVDAK use in pregnant women to inform a drug-associated risk. In an animal reproduction study, administration of the small molecule component of TIVDAK, MMAE, to pregnant rats during organogenesis caused embryo-fetal mortality and structural abnormalities at exposures below the clinical exposure at the recommended dose (see Data ) . Advise patients of the potential risk to a fetus. The background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2%-4% and 15%-20%, respectively. Data Animal Data No embryo-fetal development studies in animals have been performed with tisotumab vedotin-tftv. In an embryo-fetal development study in pregnant rats, administration of two intravenous doses of MMAE, the small molecule component of TIVDAK, on gestational days 6 and 13 caused embryo-fetal mortality and structural abnormalities, including protruding tongue, malrotated limbs, gastroschisis, and agnathia compared to controls at a dose of 0.2 mg/kg (approximately 0.5-fold the human area under the curve [AUC] at the recommended dose).

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: • Ocular Adverse Reactions [see Boxed Warning , Warnings and Precautions (5.1) ] • Peripheral Neuropathy [see Warnings and Precautions (5.2) ] • Hemorrhage [see Warnings and Precautions (5.3) ] • Pneumonitis [see Warnings and Precautions (5.4) ] • Severe Cutaneous Adverse Reactions [see Warnings and Precautions (5.5) ] The most common (≥25%) adverse reactions, including laboratory abnormalities, were hemoglobin decreased, peripheral neuropathy, conjunctival adverse reactions, nausea, fatigue, aspartate aminotransferase increased, epistaxis, alopecia, alanine aminotransferase increased, and hemorrhage. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Seagen Inc. at 1-855-4SEAGEN or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch . 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. The data in the WARNINGS AND PRECAUTIONS section reflect exposure to TIVDAK in 425 patients with recurrent or metastatic cervical cancer who received at least one dose of TIVDAK at 2 mg/kg intravenously every 3 weeks in innovaTV 301, innovaTV 204, innovaTV 201 (NCT02001623), innovaTV 202 (NCT02552121), innovaTV 203 (NCT03245736), and innovaTV 206 (NCT03913741). The median duration of treatment with TIVDAK was 3.7 months (range: 0.4-40.2). In this pooled safety population, the most common (≥25%) adverse reactions, including laboratory abnormalities, were hemoglobin decreased (45%), peripheral neuropathy (39%), conjunctival adverse reactions (38%), nausea (37%), fatigue (36%), aspartate aminotransferase increased (33%), epistaxis (33%), alopecia (31%), alanine aminotransferase increased (30%), and hemorrhage (28%). The data described in this section reflect exposure to TIVDAK from innovaTV 301 and innovaTV 204. innovaTV 301 The safety of TIVDAK was evaluated in an open-label, randomized study in patients with recurrent or metastatic cervical cancer with disease progression on or after systemic therapy [see Clinical Studies (14.1) ]. A total of 250 patients received TIVDAK 2 mg/kg every 3 weeks until disease progression or unacceptable toxicity. The median duration of treatment with TIVDAK was 3.7 months (range: 0.4-19). Serious adverse reactions occurred in 33% of patients receiving TIVDAK. The most common (≥2%) serious adverse reactions were urinary tract infection (4.8%), small intestinal obstruction (2.4%), sepsis (2%), abdominal pain (2%), and hemorrhage (2%). Fatal adverse reactions occurred in 1.6% of patients who received TIVDAK, including acute kidney injury (0.4%), pneumonia (0.4%), sepsis (0.4%) and Stevens-Johnson syndrome (0.4%). Adverse reactions leading to permanent discontinuation occurred in 15% of patients receiving TIVDAK; the most common (≥3%) adverse reactions leading to permanent discontinuation were peripheral neuropathy (6%) and ocular adverse reactions (6%). Adverse reactions leading to dose interruption occurred in 39% of patients receiving TIVDAK; the most common (≥3%) adverse reactions leading to dose interruption were ocular adverse reactions (16%) and peripheral neuropathy (6%). Adverse reactions leading to dose reduction occurred in 30% of patients receiving TIVDAK; the most common (≥3%) adverse reactions leading to dose reduction were peripheral neuropathy (10%) and ocular adverse reactions (10%). The ocular adverse reactions included conjunctival disorders (4.8%), keratopathy (4%), and dry eye (0.8%). The most common (≥25%) adverse reactions, including laboratory abnormalities, in patients receiving TIVDAK were hemoglobin decreased, peripheral neuropathy, conjunctival adverse reactions, aspartate aminotransferase increased, nausea, alanine aminotransferase increased, fatigue, sod…